A bingo in Scrabble is playing all seven tiles from your rack in a single turn, earning a 50-point bonus on top of the word's regular score. Bingos are how serious players reach 400+ scores. Common bingo-friendly racks include the letters R, S, T, N, A, E, I.
Bingo (Scrabble)
Playing all 7 tiles on a single Scrabble turn for a 50-point bonus.